NEW YORK (Standard&Poor's) Oct. 10, 2012--Standard&Poor's Ratings Services has assigned its 'AA-' rating to the City of San Antonio, Texas' electric and gas systems variable-rate junior-lien revenue refunding bonds, series 2012 A, B, and C. At the same time, Standard&Poor's affirmed its 'AA' rating on senior-lien parity debt, its 'AA-' rating on the systems' junior-lien bonds, and its 'A-1+' commercial paper rating on the utility. The outlook is stable. As of July 31, 2012, the electric and gas utility had $5.1 billion of debt outstanding. "The rating reflects what we view as several strengths of San Antonio's electric and gas utility, known as CPS Energy, including a strong, growing economy; very competitive electricity rates;